74 lines
3.0 KiB
C
74 lines
3.0 KiB
C
/****************************************************************************
|
|
* libs/libc/string/lib_strtok.c
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <string.h>
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
static FAR char *g_saveptr = NULL;
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: strtok
|
|
*
|
|
* Description:
|
|
* The strtok() function parses a string into a
|
|
* sequence of tokens. On the first call to strtok() the
|
|
* string to be parsed should be specified in 'str'. In
|
|
* each subsequent call that should parse the same string,
|
|
* 'str' should be NULL.
|
|
*
|
|
* The 'delim' argument specifies a set of characters that
|
|
* delimit the tokens in the parsed string. The caller
|
|
* may specify different strings in delim in successive
|
|
* calls that parse the same string.
|
|
*
|
|
* Each call to strtok() returns a pointer to a null-
|
|
* terminated string containing the next token. This
|
|
* string does not include the delimiting character. If
|
|
* no more tokens are found, strtok() returns NULL.
|
|
*
|
|
* A sequence of two or more contiguous delimiter
|
|
* characters in the parsed string is considered to be a
|
|
* single delimiter. Delimiter characters at the start or
|
|
* end of the string are ignored. The tokens returned by
|
|
* strtok() are always non-empty strings.
|
|
*
|
|
* Returned Value:
|
|
* strtok() returns a pointer to the next token, or NULL
|
|
* if there are no more tokens.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#undef strtok /* See mm/README.txt */
|
|
FAR char *strtok(FAR char *str, FAR const char *delim)
|
|
{
|
|
return strtok_r(str, delim, &g_saveptr);
|
|
}
|